Engine-cylinder.



A. BIE.

ENGINE CYLINDER.

APPLICATION FILED FEB. 2. I9I5.

"Hllllml UIHUHIII To all whom it may concern:

STATES .PATENT oEEicE.

ALBERT BIE, F WINTERTHUR, SWITZERLAND, ASSIGNOR T0 BUSCH-SULZER BROS.-

DIESEL ENG-INE COMPANY, 0F ST. LOUIS, MISSOURI, A CORPORATION 0FMISSOURI.

ENGINE-CYLINDER.

Be it knbwn that I, ALBERT BIE, a citizen of the Kingdom of Norway,residing in Winterthur, "Switzerland, have invented a new and usefulImprovement in Engine- Cylinders. .a This invention is an improvement1n- 1ny tcrnal4 combustion engine cylinders and is concerned moreespecially with the structure of the head4 or inner ends thereof, theobject being to provide a construction whereby i Figure 1 is alongitudinal section through 'the water-cooling of the head may be moreeffective, which renders vthe cooling space Aaccessible for cleaning andpermits of replacement of the part exposed to. combustion, .andv whichis in general well adapted .to withstand thestrains to which this por`"tion ofthe cylinder is subjected.

In the accompanying drawings illustratthe head portion of an internalcombustion engine; and f Fig. 2 is a plan view thereof.

The' invention .is designed more particu-v larly for internal combustionengines of the Diesel type, and it may be'understood that the drawingrepresents a cylinder of an engine of this character. lThe body of thecylinder may be cast in one piece, or, asv

shown, composed of an inner section a, in which the p1stonoperates, anda separate outer jacket part a inclosing a water 0001-'4 f ing space inthe lateral wall of the cylinder.

A head member d is separate from both portions of the cylinder body andis united thereto by bolts L, which pass throughthe head into the parta', the part a being held in place by a iiange u'which rests on a shoul-dero on the jacket. The head member is a casting made with anappropriate space or spaces c', 7c in its interior for circulation ofcool/ing water, to reduce. the temperature'of the part forming the'endwall of thel comlbustion chamber b, and with valve sockets g extendingthrough the cooling spaces for the reception of the housings of valves1' and s, which may be, respectively, a fuel-atomizing valve and anair-startingvalve, the air for scavenging or combustion being admittedthrough another valve in the head br through-lateral ports, not shown.In the preferred form of the invention the cooling spaces c', 'lc areseparated by an inner trans- Speciication of Letters Patent.

Patented May 22, 1917.

Application mea February 2, 1915. serial No. 5,621.

an exceptionally strong trusscd construction is secured and a favorableutilization of the cooling water made possible, in addition to the otheradvantages enumerated herein-` after.

The inner side of the head, which is left open in the casting, iscovered by a separate' plate c, smaller in diameter than the head,

constituting part of the inclosure of the cooling space i and dividingthe same from the combustion chamber. This plate is provided withopenings c and f for` the valves and is held at its circumference by thepressure of the bolts t between an annular flange orshoulder t on thehead and the part a of the cylinder body, where a recess and en'- gaginglrib vare provided for securing av compression-tight joint for the',combustion chamber. In addition to the support thus afforded, the plateis sustained inwardly of its circumference against the pressure in thecombustion chamber bythe inner p0rtions of the valve sockets g, whichproject within the space c' so that their ends lie substantially inaplane with the flange t. The said 'flange is located somewhat above thelower end ofthe encircling side wall of the head, thereby forming an'internal rabbet which with the upper end of the cylinder part aconstitutes an annular recess or groove wherein the plate is held, theplate being somewhat smaller in diameter than the recess as indicated,so as to permit of radial eXpan- A sion of the plate relative to thehead and cylinder body. The plate c being a separate part can befinished 0H smooth on its internal suri face, which promotes cooling,since it minimizes the opportunity for adhesion of scale and steambubbles and enables the water to keep the surface washed clean.Furthermore, the cooling space in the head is rendered easily accessibleand the vexpense of repairs isreduced, since in event of deteriorationof the wall at theend of the combustion chamber'the same can be removedand replaced by' another. Finally the construction enables this wall tobe made of special material selected with a view to resisting theconditions of heat and pressure to which it is subjected. The sockets gfor thevalves of the cylinder head may also be made in one piece withthe plate c and the ends of the sockets may have bearing against thecylinder head.

-It will be understood that the drawing does 2. In an internalcombustion engine cylinder, the combination with a head member hollowfor the circulation of coolingwater and open at its inner side, the saidhead member being formed with an encircling side wall having an internalrabbet, of a separate plate seated at its outer portion in said rabbetand covering said inner side of the head member and separating thecooling space therein from the combustion space.

3. In an internal combustion engine cylinder, the combination with acylinder body anda separate cylinder head secured to the cylinder body,the head and body being formed to inclose between them an internalannular recess, the latter being hollow for the circulation of coolingwater, of a part interposed betweensaid body and head and closing offthe interior of the head from the combustion space, the said part beingof smaller diameter than the head and received at its circumferentialportion in said recess.

42111 an internal combustion engine, a cylinder body and a cylinder headmember containing a cooling space open at its inner side, in combinationwith a separate part closing the inner side of said head member and heldadjacent its circumference between the same and the cylinder body, thehead member having projections in its cooling space affording shouldersagainst which said part bears inwardly of its circumference.

5. In an internal combustion engine cylinder,.the combination with ahead formed 4with a cooling space and valve sockets extending throughsaid cooling space, of a plate closing said cooling space off from thecombustion space and having bearing against thel inner projecting endsof said valve sockets. v j

6.*'In an internal combustion engine cylinder the combination with ahead formed with a cooling space, said head having a side wallencirelingvsaid space, of a plate cooperating with said side wall toclose said cooling space from the combustion space, said plate havingsockets for the valves and the ends of these valvel sockets having bear-7@ ing against the cylinder head.

7. In an internal combustion engine cyl-- inder the combination of` acylinder body, a hollow water-cooled head, and an interposed removablepart constituting the inner wall of the cooling space inthe head, thesaid part having a rib on its inner side entering a groove in the end ofthe cylinder body for the production of a compression tight joint.

. 8. In an internal combustion engine, a gg cylinder head comprising ahollow casting containing a cooling space, vsaid casting bei `ing openat the inner side, in combination with a separate inner portion appliedagainst the openend of thecasting and havg5 ing an internal surfacefinished off smooth to be washed by the cooling water.

l9. In an internal combustion engine, the combination of a cylinderbody, a hollow water-cooled head, and a plate forming the 9o end wall ofthe combustion chamber,l the said plate beingmounted in a recess betweena the head and 4body and being capable of ra-4 dial expansion thereinrelative to said parts.

10. An internal combustion engine cylina5 der having a body, a separateouter watercooled head, an interposed removable part closing the innerside of the water space of 4the head and constituting the end wall ofthe combustion space, and means whereby 10e said part is held in placewith freedom for radial expansion relative to the .other parts.

11. In` an internal combustion engine, the

-combination of an outer cylinder part, aV

hollow'head bolted thereto, said head and 105 outer body part havinginternal ledges, an inner cylinder part, and a' removable plate closingthe inner side of the head, said inner cylinder partnand said'plate-being held by and between said internal ledges.

' 12. In an internal combustion engine, the combination with a wallforming the end of the combustion space, of a hollow watercooled'headhaving a transverse inner wall and valve sockets united with said walland' 115 with an outer part of the head and bearing at their inner endsas supports against the end wall ofthe combustion space.

13. In an internal combustion engine, the I combination with a'cylindenof a hollow 12o water-cooled head member, and a separate v plateconfined at its outer edge between the head member and cylinder andclosing off the end of the combustion space from the water-cooling spacein the head, said head member being of unit construction compris' inouter and inner l,transverse walls and a sie wall and valve socketsuniting thetransverse walls, the inner ends of the valve y socketsprojecting beyond the inner transverse Wall and ai'ording support to theinterior part of the plate.

' 14. In an internal combustion engine, the combination With a cylinder,of an outer hollow Water-cooled head member, and an inner member formingthe end Wall lof the combustion space, said outer member being formedwith side and top Walls and an inner transverse Wall dividing theWater-cool- 10 ing space, and valve sockets uniting said top and innerWalls and bearing at their inner ends against said inner member.

In testimony whereof, I have signed this specification in the presenceof two witnesses.

ALBERT BIE. i

Witnesses:

Dr. ROBERT SGHLAEFFER, CARL GUBLER.

